18268280

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{7487}}^1$

素因数の和:7559

約数の個数: 32

約数和(自身を含む): 41783040

約数和(自身を除く): 23514760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 7487, 14974, 29948, 37435, 59896, 74870, 149740, 299480, 456707, 913414, 1826828, 2283535, 3653656, 4567070, 9134140, 18268280]

約数ペア:

[(1, 18268280), (2, 9134140), (4, 4567070), (5, 3653656), (8, 2283535), (10, 1826828), (20, 913414), (40, 456707), (61, 299480), (122, 149740), (244, 74870), (305, 59896), (488, 37435), (610, 29948), (1220, 14974), (2440, 7487)]